#define _CRT_SECURE_NO_WARNINGS 1
#include<iostream>
#include<cstdio>

using namespace std;

double add(double x, double y)
{
	return x + y;
}

int main()
{
	double x, y;
	cin >> x >> y;
	printf("%.2lf", add(x, y));
	return 0;
}